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re: indoor battery?
16 dec 2000
george l ghio wrote:
>hydrogen is explosive at 5%...
consider a 2,000 ft^2 0.2 ach "airtight" house with 3,200 ft^3/h (53 cfm)
of natural airflow (less than ashrae's 60 cfm fresh air standard for a
family of 4.) to explode it, we need to generate at least 0.05x3200 = 160
ft^3 of h2 in less than an hour, since some leaks out during the time
we are generating it. this takes at least 160x100 = 16,000 wh or 16 kw
at 100% electrolysis efficiency. at 30% efficiency, we need to overcharge
the batteries for an hour at 48 kw...
but the hydrogen may want to exfiltrate the house much faster than indoor
air, even with no indoor-outdoor temperature difference, since it's about
8 times lighter.
nick
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